I have been in the world of Wireless Access Points and Mobile for months now, and part of what I started looking at is with 802.11ax coming in 2019-2029 an access point is going to need a 10G connection. Well actually even now there are needs for over 1gigabit connections to access points. The access point I have been playing with for the past week is Xirrus XD2-240 which has a maximum bandwidth of 6.9Gbps. I have two gigabit ethernet connections to the AP which I can set up for failover, aggregate, or load balancing.
An active multimode fiber local area network would be an option to 10gig copper, and scale to higher speeds. Then I found information on passive optical lan (POL). This is the same technology used for FTTH. In researching POL I found information how much greener POL can be. Nokia has this post.
I'll write more about POL and other fiber technologies in addition to wireless.